Struct RlmConfig 

pub struct RlmConfig {
    pub mode: String,
    pub threshold: f64,
    pub max_iterations: usize,
    pub max_subcalls: usize,
    pub runtime: String,
    pub root_model: Option<String>,
    pub subcall_model: Option<String>,
}

RLM configuration

Fields

mode: String

Mode: “auto”, “off”, or “always”

threshold: f64

Threshold ratio of context window to trigger RLM (0.0-1.0)

max_iterations: usize

Maximum iterations for RLM processing.

Semantics

An “iteration” is one full router step: system prompt + tools → LLM round-trip → tool calls → results → next LLM round-trip. The loop terminates in one of four ways, mapped directly to RlmOutcome on the emitted RlmComplete event:

Termination condition	Outcome
Model emitted a FINAL: marker	Converged
max_iterations reached without FINAL:	Exhausted
Provider or tool raised an error	Failed
The caller’s AbortHandle fired	Aborted

Exhausted is not an error — the partial result is still returned and the caller decides whether to retry with a higher limit, fall back to chunk compression, or surface the partial answer to the user. Session-level context compaction (see crate::session::helper::compression) treats Exhausted the same as success and re-uses the summary it produced.

max_subcalls: usize

Maximum recursive sub-calls

runtime: String

Preferred runtime: “rust”, “bun”, or “python”

root_model: Option<String>

Model reference for root processing (provider:model)

subcall_model: Option<String>

Model reference for subcalls (provider:model)

Trait Implementations

impl Clone for RlmConfig

fn clone(&self) -> RlmConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RlmConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RlmConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RlmConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for RlmConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.